【題目】--What do you think of cloning?

--No doubt it’s a great invention. But ________, it may have some side effects.

A．if not properly handling B．if properly not handled

C．if not properly handled D．if properly not handling

【答案】C

【解析】

試題分析：考查分詞的用法。題意，如不能正確處理，克隆可能有副作用。修飾分詞否定式的副詞應(yīng)置于not之后，排除B,D項；分詞做狀語的時候，如句子主語是分詞動作的承受者，應(yīng)該使用過去分詞，排除A項。故C項正確。

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